Mortality rates in two populations of the viviparous fish Poeciliopsis baenschi (Teleostei: Poeciliidae)

Mortality is one of the most important demographic features. Measures of size- or sex-specific mortality can help to explain local selective pressures and can also be used to construct demographic models that estimate population trends. This study estimated mortality rates for 2 populations of a viviparous freshwater fish, endemic to western Mexico (Poeciliopsis baenschi). We found that mortality was size- and sex-dependent and different between both populations. We compared our findings with mortality rates previously estimated for other populations of this species.

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Bibliographic Details
Main Authors: Molina-Moctezuma,Alejandro, Zúñiga-Vega,José Jaime, Espinosa-Pérez,Héctor
Format: Digital revista
Language:English
Published: Instituto de Biología 2013
Online Access:http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1870-34532013000300028
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